html,
body {
    background-image: url(../image/update.png);
}

h2 {
    /* 文本居中 */
    text-align: center;
    /* 上下内边距20px，左右内边距0px */
    padding: 20px 0;
}

p {
    /* 文本居中 */
    text-align: center;
    color: #666;
    font-size: 15px;
    padding: 10px 0;
}

.row {
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.right span {
    width: 100px;
    line-height: 60px;
    font-size: 13px;
}

.right {
    width: 100%;

}

input {
    width: 600px;
    line-height: 30px;
    border-radius: 8px;
    font-size: 20px;
    text-indent: 10px;
    border: none;
    outline: none;
}

#submit {
    width: 300px;
    height: 40px;
}

#sendCode {
    width: 130px;
    height: 30px;
}